Throughtout the summer, I trained/commuted on a MTB with street tires, clipless pedals, and bar ends. I did everything I could to make the bike go faster on roads. On a good day, I cold hold about 18-20 mph on flats.
When the weather got cold and the days short, I parked it and focused on swimming.
After about six weeks of not riding, I bought a road bike (a trek 1000c), expecting to gain the 4-5 mph the nice man at the bike shop said I would.
After two weeks and 144 miles with the road bike I am holding about the same speed as I did on the MTB.
The thing is that it is much colder now than it was then. I have to bundle up, carry a bag for when I shed layers of clothes as I get warmer.
Is the cold weather slowing me down?
Do the extra clothes make me less aero?
Does the extra weight slow me down?
Shouldn't I have recovered from my six week break? I was riding about 60 miles a week before (I also swim, which takes priority because that's where I actually compete)
How can I squeez a few extra mph out of my road bike? It has 700x28 100 psi tires, a suspension seat post and an adustable stem. Otherwise, it's nearly the same mechanically as a Trek 1000.
Or Do I just need to be patient?